Since firewalls are so commonly used it is worth exploring them in greater depth. Corporations often set up rules for managing their Web connections using firewalls. A firewall enables a company to designate how all end users can use their network and decide what information is passed through Web servers and other servers.
There are several methods a firewall uses to control traffic that comes into and goes out of the network. One way firewalls do this is through packet filtering. During this process a firewall analyzes small packets of information against pre-designated filters. All data is sent via small packets of information through filters. Safe information is passed through and unsafe information is generally removed.
Another way firewalls mitigate traffic is through proxy service. This means the firewall retrieved information from the Web and sends it to the requesting computer. Still another method of traffic control used by firewall is stateful inspection. This technique allows the firewall to compare certain parts of the data packet to information gathered from trusted sources. Information going to the firewall from the Internet is monitored to determine whether it contains key characteristics that suggest the information is safe rather than harmful. Information designated as safe passes through freely and other information is blocked.
The methods a company selects will depend on a number of factors including personal preferences. Regardless of the method a firewall uses however a company or network administrator can customize the firewall to filter information based on a pre-established set of criteria.
Friday, December 14, 2007
networking
The Importance of Firewalls to [Network Security]
Most networks should have a firewall in place before they are up and running. A firewall is the most common form of"network security" employed by companies large and small. If you own a personal computer your anti-virus software company may at one time or another have offered you firewall protection.
A firewall on a home [network security] is just as important as one on a corporate network. Why? Most smaller networks have as many [network security] issues that larger corporate networks have. A firewall helps protect a network against potential data loss, corruption and hackers.
What Is A Firewall
A firewall is nothing more than a fancy term used to describe a blockade that prevents outside forces from accessing your [network security]. It is called a firewall because it prevent information or data loss from one place to another. Typically a firewall is some program or hardware that you have to install in your computer that helps filter information coming from the Web to your computer network. A firewall provides a series of filters that screens information allowing only safe information to pass through to your network.
In a large company, multiple computers are often linked using network cards. Companies usually provide multiple connections to the Internet. In order to protect all of these computers a firewall is necessary so that only certain people can access corporate computers through the Web (those that are authorized to do so). While a firewall is not foolproof it basically does a good job of protecting computers from Internet threats at their connection points.
Article by Frank Owen, visit his web site on network security for more information on network security
Most networks should have a firewall in place before they are up and running. A firewall is the most common form of"network security" employed by companies large and small. If you own a personal computer your anti-virus software company may at one time or another have offered you firewall protection.
A firewall on a home [network security] is just as important as one on a corporate network. Why? Most smaller networks have as many [network security] issues that larger corporate networks have. A firewall helps protect a network against potential data loss, corruption and hackers.
What Is A Firewall
A firewall is nothing more than a fancy term used to describe a blockade that prevents outside forces from accessing your [network security]. It is called a firewall because it prevent information or data loss from one place to another. Typically a firewall is some program or hardware that you have to install in your computer that helps filter information coming from the Web to your computer network. A firewall provides a series of filters that screens information allowing only safe information to pass through to your network.
In a large company, multiple computers are often linked using network cards. Companies usually provide multiple connections to the Internet. In order to protect all of these computers a firewall is necessary so that only certain people can access corporate computers through the Web (those that are authorized to do so). While a firewall is not foolproof it basically does a good job of protecting computers from Internet threats at their connection points.
Article by Frank Owen, visit his web site on network security for more information on network security
Subscribe to:
Comments (Atom)